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Case Study: Differential Supply for an online marketplace seller in East Africa

Source:Case / Time:2026-09-18

Differential for An online marketplace seller in East Africa

An online marketplace seller came to us with a differential programme for East Africa. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.

The starting point

  • Inconsistent hardness between lots
  • A supplier who changed material without saying so
  • Warranty claims traced back to a single lot

Differential case study

What was specified

PartDifferential
ClientAn online marketplace seller
MarketEast Africa
Volume50,000 pieces across 4 specifications
Base materialABS Plastic
Sampling rounds4
Delivery window10 weeks from PO to ex-factory
ComplianceSGS

How it was resolved

  1. The specification was rebuilt around ABS Plastic and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Differential production run

Result

  • 50,000 pieces delivered inside the 10-week window.
  • Unit cost held within 3.0% of the original quotation.
  • Inspection-related rejection stayed under 0.5%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

Planning something similar?

Ask for the current catalogue and the specification sheet for this line.

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